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Posted by on Thursday, December 22, 2011 at 1:12pm.

GENERAL SOL.|SINtheta| = 1/2

  • MATHS - , Thursday, December 22, 2011 at 4:05pm

    |sinθ| = 1/2 means that

    sinθ = 1/2 or sinθ = -1/2

    sinθ = 1/2 in 1st and 2nd quadrants.
    sinθ = -1/2 in 3rd and 4th quadrants

    So, θ = nπ ± π/6 for any integer n.

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